Deploy nestjs app to vercel#23

1. Create an `api/restful.js` file with the following content: ``` js require('../dist/src/main'); ``` Or create an `api/restul.ts` file with: ``` ts require('../src/main'); ``` 2. Create a `vercel.json` file with the following content: ``` json { "framework": null, "outputDirectory": ".", "buildCommand": "npm run build", "functions": { "api/*.js": { "memory": 1024, "maxDuration": 10 } }, "rewrites": [ { "source": "/api(.*)", "destination": "/api/restful" }, { "source": "/(.*)", "destination": "/public" } ] } ``` 3. Deploy by executing `vercel deploy` or `vercel deploy --prod`. 4. Locally development: 1. You can just execute `vercel dev -l 3100`, which automatically loads the `.env` file. You may need to run `npx nest build --watch` together. 2. ~~Execute `dotenv npx nest start --watch` which manually loads the `.env` file.~~ I found `--watch` doesn't work in this way. 3. Execute `npx nest start --watch` which needs to add the following content in your codes to load the `.env` file: ``` ts export const isNestDev = !process.env.JWT_SECRET if (isNestDev) { require('dotenv').config(); } ```